Pinwheel and star-wheel motion.



No. 719,198. PATENTED JAN. 27,1903.

J. T. OYR. PINWHEEL AND STAR WHEEL MOTION.

APPLICATION FILED NOV. 15, 1902. I0 IODEL.

2 SHEETS-SHEET 1.

No. 719,198. PATENTED JAN. 27, 1903. J. T. GYR. PINWHEEL'AND STAR WHEELMOTION. APPLICATION FILED NOV. 15, 1902. 'no MODEL.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOSEPH T. CYR, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON &KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A COR- PORATION OFMASSACHUSETTS.

PINWHEEL AND STAR-WHEEL MOTION.

SPECIFICATION forming part of Letters Patent No. 719,198, dated January27, 1903. Application filed November 15, 1902. Serial No. 131,479- (Nomodel.)

To aZZ whom, it may concern.-

Be it known that I, JosEPH T. CYR, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts,haveinvented certain new and useful Improvements inPinwheel and Star- Whcel Motions, of which the following is aspecification.

My invention relates to a pinwheel and star-wheel motion, technicallytermed Geneva motion, in which a continuous rotation of the pinwheelcommunicates an intermit tent rotary motion to the star-wheel; and myinvention more particularly relates to a modified construction of thepinwheel and starwheel motion shown and described in my United StatesLetters Patent No. 699,910. In said patent the pinwheel only has onedriver-pin; but in my present invention the pinwheel has two driver-pinsand two oppositely-arranged curved offset flanges and two pair of pinsor studs to operate in connection with projections on the segments ofthe starwheel to lock or hold the star-Wheel when one of the driver-pinsis not in engagement with one of the slots in the star-wheel.

Referring to the drawings, Figure 1 is a side View of a pinwheel andstar-wheel motion embodying my improvements. Fig. 2

corresponds to Fig. 1, but shows the reverse view of the pinwheel andstar-wheel motion.

Fig. 3 corresponds to Fig. 2, but shows a different position of thepinwheel; and Fig. 4

corresponds to Fig. 3,but shows a difierent.

5 position of the pinwheel.

In the accompanying drawings, 1 is a pinwheel secured on a driven shaft2, in this instance by a set-screw or bolt 3. The pinwheel 1 has the twodriver-pins 4E and 5 extending out from the same side thereof uponopposite sides of the shaft 2. On the same side of the pinwheel 1 as thedriver-pins 4 and 5 are two curved flanges or extensions 6 and 7 uponopposite sides of the shaft 2 and 5 intermediate the pins 1 and 5. Alsoon the same side of the pinwheel 1, on opposite sides of the shaft 2 andoutside of the flanges 6 and 7, are two pairs of pins or studs 8 8 and 99.

The star-wheel 10 is in this instance keyed on a shaft 11 to communicatean intermittent motion thereto and has six radial slots or recesses 12in its periphery to be engaged by the driver-pins 4 and 5. Intermediatetheradial slots 12 the periphery of the star-wheel 10 has the concaverecesses or depressions 13, 5 5 the curvature of which corresponds tothe curvature of the two offset flanges 6 and 7. Upon the side or faceof the star-wheel 10 contiguous to the pinwheel 1 and at the outer oropen ends of the radial slots 12 are projec- 6o tions 14, having theirinner edges slightly curved. The width or thickness of the projections14 is a little less than the distance between one of the offset flanges6 or 7 and a pair of pins or studs 8 8 or 9 9, so that said projectionscan pass between the same. (See Fig. 2.)

The operation of the pinwheel and starwheel motion shown in the drawingsand above described will be readily understood by those skilled in theart. The continuous motion of the shaft 2 communicates a continuousrevolution to the pin-wheel 1, and the engagement of one of thedriver-pins 4: or 5 with a radial slot 12 in the star-wheel 1Ocommunicates a partial rotation to said starwheel, in this instanceone-sixth of a revolution, and then there is a dwell of the starwheel.The pinwheel 1, with the two driverpins 4 and 5, communicates twopartial revo- 8o lutions to the star-wheel 10 at each completerevolution of said pinwheel.

By means of the two curved flanges 6 and 7 and the two pair of pins orstuds 8 8 and 9 9 and the projections 14 on the star-wheel 1O thestar-wheel is locked or held in position during the time it isstationary or when one of the driver-pins4 or 5 is not in engagementwith one of the slots 12 in the star-wheel.

Referring to Fig. 2, it will be seen that 0" when both of thedriver-pins' i and 5 ar M15 of engagement with the star-wheel and atequal distances therefrom, as shown 1n said figure, the projections 1 1on the edge of the star-wheel will extend between one, of the 5 curvedflanges 6 0167 and one pair of pins or studs 8 8 or 9 9 m the pinwheel1, and thus lock or hold the j tar-wheel stationary. The continuedrevcilution of the pinwheel 1 in the direction/f arrow a will cause oneof the driver-pins, as 5, to enter one of the radial slots 12 in thestar-wheel 10, and at the same time one of the pairs of pins, as 8 willpass beyond the projection 14: on the star-Wheel (see Fig. 4) and leavethe star-wheel free to be moved by the engagementof the pin 5 with theradial slot 12, and the continued revolution of the pinwheel 1 moves thestar wheel 10 from the position shown in Fig. 4- to the position shownin Fig. 3, carrying the projection 14 on the star-Wheel 10 away from thecurved flange 6 and the pin or stud 8 and leaving the star-wheel free tobe turned by the revolution of the pinwheel. As the driverpin 5 passesout of the radial slot 12 in the star-Wheel 1O (supposing the pinwheelto be revolving in the direction of arrow Z), Fig. 4) the projection 14enters between the curved flange (j and the pin or stud 8 to lock orhold the star-wheel in position after the driver-pin 5 passes entirelyout of the radial slot 12.

The advantages of my improvements will be readilyappreciated by thoseskilled in the art.

By means of two driver-pins on the pinwheel two partial rotations arecommunicated to the star-Wheel at every complete revolution of thepinwheel, and by means of the curved flanges 6 and 7 and the pairs ofpins or studs 8 8 and 9 9' the star-wheel is firmly held or locked inposition every time it comes to a stop.

It will be understood that the details of construction of myimprovements may be varied, if desired. For example, a pinwheel withmore than two driver-pins may be used.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a pinwheel and star-wheel motion, a pinwheel having twodriver-pins, two curved flanges or extensions and two pairs of pins orstuds, intermediate the driver-pins, and a star-wheel having radialslotsin its periphery, and concave recesses or depressions intermediatesaid slots, and projections at the outer ends of said slots, on the sideof the star-Wheel contiguous tothe pinwheel, substantially as shown anddescribed.

2. In a pinwheel and star-Wheel motion, the combination with a pinwheelhaving a plurality of driverpins, and a plurality of curved flangesorextensions and pins or studs, to hold or lock the star-wheel, of astar-Wheel having radial slots in its periphery and concave recesses ordepressions intermediate said slots, and projections at the outer sideof said slots on the side of the star-Wheel contiguous to the pinwheel,substantially as shown and described.

JOSEPH T. OYR. \Vitnesses:

J. O. DEWEY, M. I-IAAs.

